bjorkstrom



(N0 Model.)

2 Sheetsnshet l.

A' P' BJRKSTRUM.

PLGWl 110,397,891. Patented Feb. 19,1889.`

' (No Model.) 2 Sheets-Sheet 2.

A. F. BJRKSTRM.

PLOW.

'0711818111911 Feb. 19, 1889.

Suva/V60@ l NiTn STATES PATENT ADOLF FREDRICK BJRKSTRM, OF KANSAS CITY, B'IISSOURI.

PLOW.

SPECIFICATION forming part of Letters Patent No. 397,891, dated February 19, 1889.

Application filed October 18, 1888. Serial No. 288,458. (No model.)

To all whom t may concern;

Be it known that I, Anoia Fnnomcii BJoRKsTRoM, a citizen oi the United States, re-

siding at Kansas ("ity, in the county ot' Jacking a vertical slot, j", which registers with a son and State ol Missouri, have invented new and useful Improvements in Plows, of which the following is a specilication.

My invention relates to improvements in plows; and it consists in a certain novel construction and combination oi devices, fully described in connection with the accompanying drawings, and specifically pointed out in the appended claims.

In the drawings, Figure l is a perspective view ot a plow embodying my improvements. Fig. 2 is a side view ot' the same, partly in scction. Fig. 3 is a longitudinal sectional view of the rear end ol the plow-beam to illustrate its connection with the frame. Fig. 4 is a detail view oi' the guide-plate. Fig. 5 is a similar view olf the wear-plate for the mold-board. Fig. (i is a front view, partly insection, of the holder for the colter. Fig. 7 is a similarl View of the angle-plate. Fig. 8 is a detail view of the block and wedge used in the adjustmentI of the colter, arranged in the proper relative positions. Fig. 9 is a similar view of the guide-plate and knife-plate attached. Fig. 10 is a transverse sectional view on the line .r oc ot Fig. 2, looking rearward.

Referring by letter to the drawings, A designates J[he trame of the plow, having a front upwardly-extending arm or extension, c, and a rear arm or extension, ci.

B designates the landside, secured to one side of the said frame.

C designates the point or share, secured to the front end of the frame, and D designates the mold-board, which is secured at its front end to the trame in the ordinary or any preferred manner.

The handles F E are secured ai` their i ront ends, respectively, to the rear arm or extension, ci?, and to the inner side ot' the moldboard, and are maintained at the proper distance apart by the interposed braces C C C. The handle E is provided at its lower end with an extension, e', which is carried across from the mold-board and is bolted at its free end to the frame of the plow adjacent to the landside.

lhe guide-plate F is tapered slightly toward its front end, where it pivoted to the frame oi the plow, and the plate is provided at its rear end with. a vertical arm, F', havtransverse slot, y, in a suitable ear, G, on the trame of the plow. An ad justing-lnilt, ll, engages the .intersecting slots, and thereby enables the rear end of the guide-plate to be vertically and laterally adjusted A supplemeniary knil'e-platej', is secured to the under side of the guide-plate, which may be removed and replaced when worn. The guideplate is arranged close to the inner side of the vlandside, and the knife-plate projects outward under the lower edge of the landside, and by cutting in the earth beyond the landside prevents the heel of the plow from ruiming out of the furrow. rlhis guide-plate is designed to be vertically adjusted at its rear end to cause more or less inclination of the point or share, so that a furrow oi' any desired depth may be cut without altering the height ot the draft on the beam; also, this guide-plate is adapted to be adjusted outward at its rear end, so that its sharpened edge extendsbcyond the landside, thereby guiding or directing the motion of the share and protecting the landside from wear which would otherwise fall thereon.

An adjustable wear-plate, I, is affixed to the rear end of the mold-board at its lower edge, and it consists of a small tapered plate pivoted at its Afront and smaller end to the inner side of the mold-board, and provided at its rear end with a slotted ear, i', which operates on an adjusting-bolt, K, on the mold-board. The object of this wearplate is to receive the wear which usually comes upon the heel of the mold-board, and also enable the lower edge of the mold-board to slide readily over the ground. By vertically adjusting the rear end of this heel-plate the wear thereon may be compensated for, and when worn out it may be readily replaced, as will be seen.

The front arm, ci., of the plow-frame is provided with a flat upper end, on. which bears the turning plate L, having a transverse rounded rib, M, on its upper side, and this vplate is pivoted at its center on a bolt, N,

IOO

which passes t-hrough the upper end of the arm a.

The plow-beam O is pivot-ed at a suitable distance from its rear end on the bolt N, and is provided on Vits under side with a transverse rounded groove, o, which bears on the rib M. '.lhe openings AL and O' in the turning-plate and the plowbeam, through which the afljusting-bolt passes, are enlarged slightly, as shown clearly in the drawings, to permit the beam a suitable vertical rocking movement on the rib M. The plate l l rotates on the bolt, and thereby allows the front end oil' the beam to be laterally adj usted to cause a broad or narrow lnrrow to `be eut.

P represents an angle-plate, having a vertical portion, p, and a horizontal portionpp, which are provided, respectively, with a vertical slot, (Q2, and a transverse slot, Q', and the said vertical slot tits on an adjustingbolt, R, on the `frame A, and is adapted to be adjusted vertically thereon. The rear end oi' the plow-beam is provided with an aperture, s, which aligns with the transverse slot Q', and the adjnsti11g-bolt engages the same. By means oi this adjustin g device it will be readily seen that an v desired Vvertical or lateral adjustment off the plow-beam may be ai'- E tained.

The coller l, which maybe o'ff any ordinary or ljn'efferred shape, is provided with a round shank, 1, is held in place on the plow-beam by the holder U, which consists ot' the fi'rame lf', embracing the plow-beam andlocked thereon at any desired iiuflination by the set-screw n, the fjrooved block 'V bearing againstone side oi the shank ofi' the coller, and the grooved wedge Y bearing against the opposite side ofi' the shank of.' the eolf'er andA firmly pressed against the same bythe set-screws \V. A ,eolter arrangeffl in this improved holder may be arranged at any desired inclination to the plow-beam, and :its blade may be fnrned at any desired angle thereto.

Having thus deseril'ied the invention, l claiml. In a plow, the. combinationvith the landside, of the adjustable guide-plate pivoted at its front side to the landside and adjustably secured thereto at its rear end, and provided with a laterally-projecting kn ite-plate extending under the landsidc, substantially as specified.

2. In a plow, the combination,with the landside, of the adjustable guide-plate pivoted at its front end to the inner side oi' thelandside, and provided with. a laterally projecting knife-plate, which extends under the landside, the said guide-plate being further provided at its rear end with a vertically-slotted arm which is arranged adjacent to a horizontally-slotted stationary arm on the plow, and the adjusting-boltengaging the said horizontal and, vertical slots, whereby the rear end ot the guide-plate may be vertically and horizontally adjusted, substantially as specified.

ln a plow, the coinlfrination, with the stationary landside, oi. the adjustable gu ide-plate pivoted thereto, and provided with a supplemen tal removable kn ite-plate, f, secured to its lower edge and projecting under the lower edge of the landside, substantially as specified.

i. In a plow, the combinatiomwith the moldboard, of a wear-plate, l, pivoted at its front end to the mol d-lioard, and provid ed at its rear end with a vertically-slotted ear, (i, engz'rged by a suitable adjusting-bolt, substantially as specified.

5. The combination, with a plow, oi' the colter-holder ll, arranged on the beam thereof', and comprising the trame U', the grooved block V, and. the grooved wtnlge and tlie Colter provided with a rounded shank fitting between the block and the wedge and held in place thereby, substantialfy as specified.

(i. The colter-holder comprising the fi'rameI ',e1nbracing the beam o'i' a plow, and provided with a set-screw, n, the grooved block and the grtn'xvetfl wedge Y', arranged in the fra-1 n e with their grotiived sides opposed to each other, and the setscrews W, bearingl against the outer side ot' the said wetlge, in eomliiination with the colter provided with a rournled shank fitting between the block and the wedge, substantially as sl'lecied.

Aln t sti]nony that I claim the foregoing as my own I have hereto affixed mysignature in presence ot' two witnesses. u

ADOLl FREDRICK BJURKSllIlUllf. `Witncsses:

ADOLPH NnLsoN, J OHAN RENEY. 

